Valve-grinder.



JOHN FEKETE, 0F BRIDGEPORT, CONNECTICUT.

VALVE-GRINDER.

riester.

Specification of Letters Patent.

Patented Apr. i3. tti.

V- application filed .Ta/nuera] 19, 1915. Serial No. 3,037.

' To ali whom 'it may concern Be it known that l, JOHN FnnE'rn, a citi zen of the United States, and resident of Bridgeport. in the county of Fairfield and State of onneeticut, have invented certain new.. and useful improvements in Valve- Grinders, of which the following is a speci- My invention relates to new and useful v improvements in valve grinding tools such vas are used for grinding puppet valves and valve seats of gasolene automobile motors, but is also obviously adapted to be used for other purposes.

The object of the invention is to provide a grinding toolavhich Will impart an oscillatory movement to a valve, similar to that produced in hand grinding; further to provide a tool for the above purpose which may be oscillated through the medium of a handle and by a backward and forward movement of the lever by the operator; further to construct the parts so that a comparatively slow backward and forward Inoveinent of the operating lever will produce a more rapid oscillatory 'movement of thevalve upon its seat; further to construct the device in a simple and inexpensive way so as to permit of its being manufactured conitmparatively,inexpensively thus permitting it to be sold at a moderate price, and finally to design the tool so that it will not-take up very .much i'oorn above the valve to be ground and whereby the hand movement required to produce the operative movement of the tool can be arranged ofi to one side where most available for operative pur*- poses. ,i

With these and other obj ects'in view the invention resides and consists in the construction and novel combination and arrangement ot' parts hereinafter more fully described, illustrated in the accompanying drawings, and pointed out in the claim here-y to appended, it being .understood that vari-j ous changs in the form. proportion, size and minor details of construction within the scope of the clai'rn may be resorted to without departure from the spirit or'sacrificing any of the advantages of the irl/vention. l i

Similar characters of reference denote like or corresponding parts throughout the several figures ofthe accompanying drawings forming a part of this specification and upon which 'A Figure l shows a side elevation of iny irnproved valve grinding tool complete with screw driver, blade attached, and one hand of an operator indicated in dotted lines as supporting the tool. Fig. 2 shows a central. verpical section throughout the body and operative portions of the tool, illustrating the spindle bearing, lever pivot and head. Fig. 3 is a bottom plan view of the valve grinding tool as shown in Fig. l and Fig. 4 is a -detached perspective view of a screw driver blade such as is shown attached to the tool in Fig. l and for engaging a puppet valve.

.Referring in detail to the characters of reference marked yupon the drawings 6 represents the body portion of the valve grinding tool, 7 the.handle and 8 an extended portion oit'l the body. An upwardly disposed lug 9 is formed upon the outer end of the extension in a manner to form an additional rnc-ans of engaging the tool.

in practice my improved tool would be held by one hand of the operator, in the manner indicated by dotted lines in Fig. l, whereinl have attempted to show the handie portion of the tool resting inthe palm of a'hand and the lug 9 engaged between the .thumb and foreiinger thus forming a. rigidV grasp of the tool in the hands of the operator.

The handle portion 'of the body is provided with a central longitiulinal bore l() therethrough in which one end portion ll of a spindle isjournaled. A. screw l2 which is seated in the top ot' the handle serves to tlifreadably engage this end of the spindle in a way to hold it in position. A small pinion i3 is formed intermediate of the length of the spindle and also forms a shulder that operates against the under side of the body. r The lower end portion 14 oi the spindle (see Fig. 3) is provided with a transverse slot l5 to receive the screw driver blade 16 shown in Figs. l and 4 and which obviously serves as` the means for the slot in the top of the puppet valve before mentioned.

A head 17 is detachably secured tothe lower spindle end 14 and lis provided upon its under side with a pair ofv extended pins 18 which further serve for theengagement of some forms of puppet valves.`

An operating lever 19 is pivotaily connected to the underside of the extension 8 at the point 20 in a manner to be swung backward and forward. The short end p01 tion of this lever is provided with a segment of'a gear 21 that alines and meshes with the pinion 13 of the spindle'beforevlnentioned. rlhe outer end of this lever is providedwith a handle 22 by means of which thelever may -be thrown backward and forward and thus Arocked upon its pivot 'in a Way to oscillate thepinion and its spind le at a comparatively rapid rate of movement. When the head is connected by means 'of the blade 16 to a puppet valve the latter would obviously be operated andv oseillate in a manner to grind it 'to its se'at as desired.

Having thus described my invention what 'slot formed therein, extended pins seated in the under face of the outer portion of the head, a lever pivoted to the lug end of the bodyand having a segment upon its short end to engage the pinion and a handleupon its longer end to operatethe lever,' pinion and head.

Signed at BridgeportY in the county of Fairfield and State' of Connecticut this 1G day of Jan. A. D., 1915.

JOHN FEKETE.

Witnesses z C. M. NEWMAN, SAMUEL C. SHAW.

to theother end of 

